This highly popular introduction to confidence intervals has been thoroughly updated and expanded. It includes methods for using confidence intervals, with illustrative worked examples and extensive guidelines and checklists to help the novice.

Douglas Altman FMedSci was an English statistician best known for his work on improving the reliability and reporting of medical research and for highly cited papers on statistical methodology. David Machin is Professor of Media and Communication at örebro University, Sweden. He has published numerous books and journal papers mostly drawing on linguistic methods.